The human ego is essentially the perception of yourself as a separate self. When you learn to call yourself by a name, you learn to see yourself as an ‘it’ or a ‘thing’, which automatically makes you separate from every other ‘it’ or ‘thing’ in the universe. When you are born, your ego is not formed yet because you do not intellectually conceptualize of who you are because you do not think of yourself as a separate thing yet. So, you do not identify with anything yet.